ATLANTA -- The Atlanta Police Cold Case Squad has charged one man with five rapes that took place in 1986 and 1987.

Daniel Wade, 61, was indicted on May 10. Investigators believe he could have committed as many as 29 rapes in DeKalb, Fulton and Gwinnett counties nearly 30 years ago.

The assaults became known as the Maintenance Man rapes, as they all occurred in apartments. Police said Wade would gain entryto some of his victim's apartments by posing as a repair man. They don't think he worked for any of the apartment complexes.

Wade became a suspect when his DNA was placed into a national index system and was matched to the five rapes, Atlanta Police said. He is currently in federal prison in Kentucky on unrelated robbery charges.

According to the Federal Bureau of Prisons, Wade was convicted of racketeering and isn't expected to be released until March 2021. He started serving the federal sentence in 2004.

An Atlanta Police investigator traveled to Kentucky to interview Wade but he refused to talk to them, according toCold Case Investigator A.B. Calhoun.

Calhoun said four of the five women who were victims are cooperating. He said a fifth victim has died.

DeKalb County Police confirm they are investigating two cases that may be connected to Wade.

"Detectives are actively working with at least one victim and are trying to locate the second one," police spokeswoman Mekka Parish said.

Parish said the rapes happened in July and October of 1994 and there may be more victims.